1 // SPDX-License-Identifier: GPL-2.0+ 2 /* 3 * Copyright (C) 2013 Samsung Electronics 4 * Piotr Wilczek <p.wilczek (at) samsung.com> 5 */ 6 7 #include <common.h> 8 #include <power/pmic.h> 9 #include <power/power_chrg.h> 10 #include <power/max77693_muic.h> 11 #include <i2c.h> 12 #include <errno.h> 13 14 static int power_chrg_get_type(struct pmic *p) 15 { 16 unsigned int val; 17 unsigned int charge_type, charger; 18 19 /* if probe failed, return cable none */ 20 if (pmic_probe(p)) 21 return CHARGER_NO; 22 23 pmic_reg_read(p, MAX77693_MUIC_STATUS2, &val); 24 25 charge_type = val & MAX77693_MUIC_CHG_MASK; 26 27 switch (charge_type) { 28 case MAX77693_MUIC_CHG_NO: 29 charger = CHARGER_NO; 30 break; 31 case MAX77693_MUIC_CHG_USB: 32 case MAX77693_MUIC_CHG_USB_D: 33 charger = CHARGER_USB; 34 break; 35 case MAX77693_MUIC_CHG_TA: 36 case MAX77693_MUIC_CHG_TA_1A: 37 charger = CHARGER_TA; 38 break; 39 case MAX77693_MUIC_CHG_TA_500: 40 charger = CHARGER_TA_500; 41 break; 42 default: 43 charger = CHARGER_UNKNOWN; 44 break; 45 } 46 47 return charger; 48 } 49 50 static struct power_chrg power_chrg_muic_ops = { 51 .chrg_type = power_chrg_get_type, 52 }; 53 54 int power_muic_init(unsigned int bus) 55 { 56 static const char name[] = "MAX77693_MUIC"; 57 struct pmic *p = pmic_alloc(); 58 59 if (!p) { 60 printf("%s: POWER allocation error!\n", __func__); 61 return -ENOMEM; 62 } 63 64 debug("Board Micro USB Interface Controller init\n"); 65 66 p->name = name; 67 p->interface = PMIC_I2C; 68 p->number_of_regs = MUIC_NUM_OF_REGS; 69 p->hw.i2c.addr = MAX77693_MUIC_I2C_ADDR; 70 p->hw.i2c.tx_num = 1; 71 p->bus = bus; 72 73 p->chrg = &power_chrg_muic_ops; 74 75 return 0; 76 } 77
